I have a Ruger SBH with a 1:20 twist barrel, and if not mistaken, S&W 57 or 58 has a 1:18.75 twist. Does anyone know why the different twist rate by manufactures. I'm guessing that with Ruger, it will handle the larger lead bullets that's available.
I'm not sure why Ruger uses a different twist rate than S&W. I've not heard anything either about Ruger revolvers in .41 mag not being able to handle heavier bullets. Since you mention it I'm curious to know if anyone has used the .41 version of the SSK bullet such as this http://www.pennbullets.com/41/41-caliber.html